1,720,956 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Investigating the use of dip-coating and angle dependent dip-coating for deposition and synthesis of CZTS thin films for use in PV applications
No full textCZTS thin films were synthesized, with fluorine doped tin oxide (FTO) on soda-lime glass (SLG) as a substrate, by means of dip-coating and angle dependent dip-coating. The experimental procedure involved using thiourea as a solution-based sulfur source for the formation of CZTS and deposited samples were annealed at 500 C in argon atmosphere for different annealing times. The effect of withdrawal speed and annealing time was investigated for conventional dip-coating, while the effect of dip angle as well as annealing time was investigated for angle dependent dip-coating. Characterization of thin films was performed with Raman spectroscopy, X-ray diffraction, ultraviolet-visual spectroscopy, scanning electron microscopy (SEM) imaging, as well as electron dispersive X-ray spectroscopy (EDXS). The thickness of the depositions were found to increase with increased withdrawal speed and the film quality was highly dependent on the annealing time. The samples produced from conventional dip-coating reached a maximum thickness of around 790 nm after two depositions annealed 12 h for each layer, and showed an even distribution of elements but a noticeable surface porosity. The film had a estimated bandgap value of 1.31 eV, with sodium present in the sample which was believed to have been a result of diffusion from the SLG layer and the possible presence of ZnS in the bulk structure. The samples produced from angle dependent dip-coating reached a maximum thickness of around 900 nm after two depositions annealed 0.5 h for the first layer and 6 h for the second layer. The result was a compact surface with little to no crystallites on the surface, believed to have been Cu2SnS3 phases. The film has an estimated bandgap value of 1.52 eV and even distributions of elements with a small amount of sodium present. ZnS phases in the bulk structure were still a possibility. The experimental procedure involving the use of angle dependent dip-coating was deemed a success, considering this being the first work known to the author that employs said method for CZTS thin film synthesis
Investigating the use of dip-coating and angle dependent dip-coating for deposition and synthesis of CZTS thin films for use in PV applications
No full textCZTS thin films were synthesized, with fluorine doped tin oxide (FTO) on soda-lime glass (SLG) as a substrate, by means of dip-coating and angle dependent dip-coating. The experimental procedure involved using thiourea as a solution-based sulfur source for the formation of CZTS and deposited samples were annealed at 500 C in argon atmosphere for different annealing times. The effect of withdrawal speed and annealing time was investigated for conventional dip-coating, while the effect of dip angle as well as annealing time was investigated for angle dependent dip-coating. Characterization of thin films was performed with Raman spectroscopy, X-ray diffraction, ultraviolet-visual spectroscopy, scanning electron microscopy (SEM) imaging, as well as electron dispersive X-ray spectroscopy (EDXS). The thickness of the depositions were found to increase with increased withdrawal speed and the film quality was highly dependent on the annealing time. The samples produced from conventional dip-coating reached a maximum thickness of around 790 nm after two depositions annealed 12 h for each layer, and showed an even distribution of elements but a noticeable surface porosity. The film had a estimated bandgap value of 1.31 eV, with sodium present in the sample which was believed to have been a result of diffusion from the SLG layer and the possible presence of ZnS in the bulk structure. The samples produced from angle dependent dip-coating reached a maximum thickness of around 900 nm after two depositions annealed 0.5 h for the first layer and 6 h for the second layer. The result was a compact surface with little to no crystallites on the surface, believed to have been Cu2SnS3 phases. The film has an estimated bandgap value of 1.52 eV and even distributions of elements with a small amount of sodium present. ZnS phases in the bulk structure were still a possibility. The experimental procedure involving the use of angle dependent dip-coating was deemed a success, considering this being the first work known to the author that employs said method for CZTS thin film synthesis
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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